<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8" />
  <meta http-equiv="X-UA-Compatible" content="IE=edge" />
  <meta name="viewport"
    content="width=device-width, initial-scale=1, maximum-scale=1,minimum-scale=1, user-scalable=no" />
  <title>css-dom操作</title>
  <link rel="shortcut icon" href="../favicon.ico" type="image/x-icon" />
  <link rel="stylesheet" href="./css/common.css" type="text/css" />
  <link rel="stylesheet" href="./css/demo5.css" />
  <script src="./js/jquery-3.6.1.min.js"></script>
  <script src="./js/demo5.js"></script>
</head>

<body>
  <div class="box">
    <div id="adver"><img src="img/adv.jpg" /></div>
    <div id="main">
      <img src="img/main1.jpg" />
      <img src="img/main2.jpg" />
      <img src="img/main3.jpg" />
    </div>
  </div>
</body>

</html>